How to Sew Designer Zipper Bags – Video Course Lesson 3 – Finale!

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It’s finally time for Lesson 3 of our Designer Zipper Bags Video Course!

How to Sew Designer Zipper Bags is a free video course that I have been working on to share the entire zipper bag making process in a way that you can’t go wrong.

Lesson 1 can be found here.

Lesson 2 can be found here.

This blog post contains everything you need for Lesson 3 – Finishing Your Zipper Bag!

If for some reason, the videos in this post won’t play for you, you can watch the entire course in this YouTube playlist.

Lesson 3, part 1 (above) is all about cutting corners from the bottom of your bag so you get that cute flat bottom.


This is a really quick video, but I felt like the step was important enough to stand on its own.

Lesson 3, part 2 is where I quickly show you how to sew the side seams.

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Be sure to place the bag with exterior sides facing, and don’t worry about sewing the corners yet!

Lesson 3, part 3 is where we bind the interior seams for a professional finish.

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Before you get started with video 3.3, you’ll want to prepare some 1 1/4’’ wide binding strips. They do not have to be cut on the bias.

I cut up my scraps from the exterior to make 5-6 strips, and then grabbed from my pile as I worked. If you want to be more exact, you will need:

  • 1 strip 1 1/4’’ x 8’’ for binding the bottom seam

  • 2 strips 1 1/4’’ x 5 1/2’’ for binding the side seams

  • 2 strips 1 1/4’’ x 4’’ for binding the bottom corners (in Lesson 3.5)

  • 2 strips 1 1/4’’ x 3’’ for binding the top corners (in Lesson 3.5)

Lesson 3, part 4 is my favorite of all! Here is where we box the bottom corners plus flatten the top zipper so it looks gorgeous!

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Nesting your bound seams at the bottom corners really helps for smooth sewing.

If your sewing machine struggles through all these layers, you may want to switch to a heavier needle.

I use a size 90/14 needle throughout this project, but don’t hesitate to use a 100/16 needle if your smaller needle seems like it will break.

Lesson 3, part 5 is just more binding – but be sure to watch so you see how I tuck the ends in for a neat finish.

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If you aren’t using wonder clips yet, I think you’ll really want some, they are a lifesaver!

I think you knew that I was sewing along with the class, right?

Well, here’s the big reveal where I turn my Tula Pink tiger bag right side out!

I’m also sharing my policy for selling things made from my patterns and tutorials. Make sure you watch if this is of interest to you.


Thanks so much for watching my Designer Zipper Bags Video Course.

How many zipper bags have you made by now? I’d love to see them, so be sure to tag me on Instagram @sewcanshe with a picture.

Now that the course has all been posted to YouTube you can start at the beginning and watch the entire video course without stopping by hitting ‘play’ on the Designer Zipper Bags playlist.

I would love it if you subscribed to my YouTube Channel and sign up for my email newsletter to make sure you don’t my next big thing!

AND this week only… I’m giving away both of the beautiful Tula Pink Zipper Bags I sewed when making this video course. Don’t miss your chance to enter here!


Disclosure: some of my posts contain affiliate links. If you purchase something through one of those links I may receive a small commission, so thank you for supporting SewCanShe when you shop! All of the opinions are my own and I only suggest products that I actually use. 🙂